Place packing paper along the sides and edges of the picture to prevent it from shifting inside the box
Use a standard picture box or cover both sides with cardboard
Place no more than 2 or 3 pictures per box
Keep the box right side up at all times
Tips;
Keep items you'll want immediately -- first aid kits, paper plates and plastic utensils, your kid's favorite toys, changes of clothing, etc in a separate location. Pack them in suitcases or boxes and pack them into your car FIRST
Use wardrobe boxes for good clothing and draperies.
Pack clothing as you wash it. - Do a load and take it from the washer to the boxes. When you move you won't start with a pile of laundry.
Pack dishes and glassware in plain newsprint.
Use towels as cushions in the box.
Stand glassware up instead of lying it down on its side